Displayed on the preview window image acquisition card access, but the image is a picture of a frame constantly refreshed, so I added pb on the display Panel of the image after the draw rectangle, is still a bling bling, see have said that you can use the online messaging ban notice video screen refresh, Delphi study is not enough in-depth, detailed guidance for bosses

CodePudding user response:

Flash, video is not refresh, you try to suspend the refresh, or reduce number,